Sandvik 55056353 Hydraulic Double Pump

Sandvik 55056353 Hydraulic Double Pump is a powerful axial piston pump unit that is mounted in selected models of Sandvik surface drills. It integrates two units of variable displacement pumps that enable the hydraulic system to operate different functions of the machine from a single drive system. This feature becomes very helpful in large-scale drills as it allows generating high hydraulic power and reliable hydraulic flows during constant operation.

The 55056353 pump is usually installed together with A10VO110 + A10VO71 units. Both units are A10VO axial piston pumps with the swash-plate variable displacement mechanism. The larger unit can provide higher hydraulic power, while the second 71 cc unit provides hydraulic power to another hydraulic function. This enables the use of only one drive system for supplying several hydraulic functions from one pump.

Since the 55056353 pump consists of two pump sections, wear does not always impact the machine evenly. While one hydraulic circuit may operate slowly or weakly, the other circuit operates normally. Other possible indicators include poor drilling performance, slow operation, increased hydraulic noise, overheating, loss of pressure, and loss of performance after the hydraulic fluid warms up to its operating temperature. This set of symptoms may be caused by internal leaks, wear of the rotating parts and problems with the pump controls.

Condition of the hydraulic oil plays a very important role in the proper operation of the axial piston pump like 55056353. Oil contamination can cause damage to pistons, cylinder blocks, valve plates, bearings and controls, while restriction of the suction flow can lead to cavitation and early wear. When replacing a Sandvik 55056353 Hydraulic Double Pump it is necessary to check filters, oil condition, suction lines, hydraulic pressure and relevant valves in order to avoid a situation when an existing problem of the system damages a new part.

Rexton Hydraulic supplies, repairs and maintains Sandvik hydraulic pumps utilized in mining and drilling machinery. We can help you with the Sandvik 55056353 pump in case you require a replacement. This hydraulic double pump is used in selected models of Sandvik and Tamrock drilling equipment, including DP800, DP1100, DP1500, Pantera 900 and Pantera 1100 drills. All of these drills work under harsh mining conditions, so this hydraulic pump has to generate stable flow and pressure during the operation of the machine.